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81.

A new species is formed when:

A.	An individual is a product of phenotype and environment	B.	Individual variations reflect reproductive isolation amongst them
C.	Phenotypes and genotypes are not related	D.	Different species may have same genotype

82.

In "Binomial Nomenclature" each organism has:

A.	Two names - one scientific and other popular	B.	One name proposed by two scientists
C.	One double scientific name having first generic and second one of species	D.	Two names - one Latinized name of place and other of person who determined it

83.

All the four limbs in a tetrapod are basically equal and similar. If their digits are webbed mode of locomotion will be :

A.	Gliding	B.	Flying
C.	Crawling	D.	Jumping

84.

Myrlapods are characterized by:

A.	Chitinous exoskeleton, three body segments notochord and one pair of antennae	B.	Chitinous exoskeleton, ventral nerve cord, several body segments and two pairs of antennae
C.	Chitinous exoskeleton, ventral nerve cord, three body segments and two pairs of antennae	D.	Chitinous exoskeleton, ventral nerve cord, several body segments and one pair of antennae

85.

Pearls are produced in "Pearl Ovster" around the:

A.	Tears of sea-mermaids falling into the oyster	B.	First drop of rains falling into the oyster in a particular month
C.	Eggs of oster which fail to leave its body	D.	Some external particles becoming embedded in the skin of oyster

86.

Air bladder is:

A.	Excretory organ of mammals	B.	Respiratory organ of brids
C.	Hydrostatic organ of bony fishes	D.	None of these

87.

Body is not segmented in:

A.	Tape-worms and scorpions	B.	Earthworms and mosquitoes
C.	Ship-worms, round-worms and star-fish	D.	None of these

88.

Biggest phylum in animal kingdom is:

A.	Chordata	B.	Arthropoda
C.	Protozoa	D.	Mollusca

89.

An animal with scales on body, separate gill slits, fins, scroll valve will be identified as member of:

A.	Chondrichthyes	B.	Osteichthyes
C.	Both (a) & (b)	D.	None of these

90.

Which of the following groups has hermaphrodite animals:

A.	Leech, hydra, tape-worm	B.	Ascaris, hydra, pheretima
C.	Hydra, leech, star-fish	D.	Tape-worm, toad, star-fish